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doc string the effect of `left' and `top' parameters in
tooltip-frame-parameters, the default values, and the units.
(tooltip-frame-parameters): Mention `top' and `left' in the doc
string.
(tooltip-show): Mention in the doc string the `top' and `left'
parameters in tooltip-frame-parameters, and x-max-tooltip-size.

From JD Smith <jdsmith@astro.cornell.edu>.
(vc-cvs-annotate-difference): Removed to generic
version in vc.el, with
(vc-cvs-annotate-current-time): Added, as override of default.
(vc-cvs-annotate-time) Added. Taken mostly from the (now removed)
`vc-cvs-annotate-difference'.

From JD Smith <jdsmith@astro.cornell.edu>.
(vc-annotate-display-default): Accept colormap scaling
ratio (now deprecated).
(vc-annotate-display-autoscale): Added.
(vc-annotate-add-menu): New autoscaling menu options "Span to
Oldest" and "Span Oldest->Newest".  Easymenu support added for
toggle menus driven by customize variable
`vc-annotate-display-mode'.
(vc-annotate-display-select): Added.
(vc-annotate): Changed temp-buffer-show-function to
`vc-annotate-display-select'.
(vc-annotate-display): Removed arguments BUFFER and BACKEND.
Added argument OFFSET.  Instead of backend function, calls now
generic `vc-annotate-difference'.
(vc-annotate-difference): Added as generic function instead of
backend-specific function.  No longer takes argument POINT, but
instead accepts a time OFFSET.
(vc-default-annotate-current-time): Added.

(DEFVAR_INT, DEFVAR_PER_BUFFER, DEFVAR_KBOARD):
Remove `DOC_STRINGS_IN_COMMENTS' cases.

version number.

Use `sexp' for :value-type instead of `face'.

regexps due to 5-digit message IDs.

(w32_display_info): Add mouse_face_overlay.

(Finsert_string): Avoid the multi-line string literals warning.

(Frun_hook_with_args_until_success, Ffuncall, For, Fand, Fif, Fcond)
(Fprogn, Fprog1, Fprog2, Fsetq, Fquote, Ffunction, Fdefun, Fdefmacro)
(Fdefvar, Fdefconst, FletX, Flet, Fwhile, Fcatch, Funwind_protect)
(Fcondition_case): Add usage: string to doc string.

(Fsave_restriction): Add usage: string to doc string.

(Fdocumentation): Don't use it.
(syms_of_doc): Don't initialize it.

(w32_mouse_position): Use it.
(note_mouse_movement): If the mouse moved off the glyph, remember its
new position.

Sync with xterm.c:
(notice_overwritten_cursor): Renamed from note_overwritten_text_cursor.
Rewritten to take glyph widths into account.
(x_y_to_hpos_vpos): Add parameter BUFFER_ONLY_P.
(fast_find_string_pos): New function.
(fast_find_position): Return the correct vpos.  Add parameter STOP.
In the final row, stop before glyphs having STOP as object.
Don't consider glyphs that are not from a buffer.
(fast_find_position) [0]: Add a presumably more correct version for after 21.1.
(expose_window_tree, expose_frame): Don't compute intersections here.
(expose_window): Do it here instead.
(expose_window_tree, expose_window, expose_line): Return 1 when
overwriting mouse-face.
(expose_window): If W is the window currently being updated, mark
the frame garbaged.
(expose_frame): If mouse-face was overwritten, redo it.
(x_use_underline_position_properties): New variable.
(syms_of_xterm): DEFVAR_BOOL it.
(x_draw_glyph_string): Add comment to use it in future.
(x_draw_glyph_string): Restore clipping after drawing box.
Fix a computation of the underline position.
(w32_get_glyph_string_clip_rect): Minor cleanup.
(x_fill_stretch_glyph_string): Remove an assertion.
(x_produce_glyphs): Don't convert multibyte characters
to unibyte characters in unibyte buffers.
(cursor_in_mouse_face_p): New function.
(x_draw_stretch_glyph_string): Use it to choose a different GC
when drawing a cursor within highlighted text.  Don't draw
background again if it has already been drawn.
(x_draw_glyph_string_box): Don't draw a full-width
box just because the glyph row's full_width_p flag is set.
(x_draw_glyphs): Fix computation of rightmost x for full-width rows.
(x_dump_glyph_string): Put in #if GLYPH_DEBUG.
(w32_draw_relief_rect): Extend left shadow to the bottom and left;
change bottom shadow accordingly. Some cleanup.
(x_update_window_end): Handle overwritten mouse face
also for tool bar windows.
(show_mouse_face): Set the glyph row's mouse_face_p flag also when
DRAW is DRAW_IMAGE_RAISED.
(clear_mouse_face): Return 1 if text with mouse face was
actually redrawn.  Make the function static.  Reset
dpyinfo->mouse_face_overlay otherwise note_mouse_highlight might
optimize away highlighting if we pass over that same overlay again.
(note_mouse_highlight): Call mouse_face_overlay_overlaps
to detect a case where we have to highlight a different region
despite not having left the currently highlighted region.
Set mouse_face_overlay in the x_display_info.  Avoid changing the
mouse pointer shape when show_mouse_face has already done it, or
there is no need.  Handle mouse-face and help-echo in strings.
(glyph_rect): New function.
(w32_mouse_position): Use it to raise the threshold for mouse
movement event generation.
(w32_initialize_display_info): Initialize the x_display_info's
mouse_face_overlay.
(w32_set_vertical_scroll_bar): Don't clear a zero height or width area.
(w32_set_vertical_scroll_bar, x_scroll_bar_create): Don't configure
a widget to zero height.

`insert_and_inherit', `insert_before_markers',
`insert-before-markers-and-inherit', `messapge', `message_box',
`message_or_box', `propertize', `format', `encode_time', `append',
`concat', `vconcat', `nconc', `widget_apply', `make_hash_table',
`insert_string', `ml_if', `ml_provide_prefix_argument',
`ml_prefix_argument_loop'.

(Fml_prefix_argument_loop): Add usage: string to doc string.

Add usage: string to doc string.

(Fmessage_box, Fmessage_or_box, Fpropertize, Fformat, Fencode_time)
(Finsert_and_inherit_before_markers): Add usage: string to doc string.

(read_c_string_or_comment): Use a variable of type `rcsoc_state' to hold
most of our state.
(put_char): Add STATE parameter, and remove all other parameters
except CH.  Use STATE to get access to all needed state.
(scan_keyword_or_put_char): New function.